feat(coach): per-source + window scope picker on sources rail

Previously the Sources rail listed BP / Weight / Pulse / Mood /
Compliance as a static legend. Marc asked for a real "what I can
see" surface — per-source checkboxes (include/exclude) plus a
window selector (last 7d / 30d / 90d / all-time) that flow through
the Coach request body.

Wire the controls all the way down:
  - <SourcesRail> grows scope + onScopeChange props. Each row
    becomes a 36px tall flex row with a real checkbox; the row
    fades to 60% opacity when its source is excluded.
  - A Select trigger above the list drives the window. Both control
    surfaces share the existing insights.coach.window.* i18n keys;
    add a new windowLabel key so the dropdown has an EN+DE label.
  - <CoachDrawer> owns the scope state (resets on each mount per
    the v1.4.20.1 plan — no conversation-level persistence yet) and
    forwards the picked scope through useSendCoachMessage to the
    chat request body. The payload only ships when the user has
    narrowed away from the all-source last30days default so the
    server can tell "no opinion" from "intentionally narrow".
  - buildCoachSnapshot already accepts the optional CoachScope from
    the previous commit; it now flows end-to-end.

No new dependencies — checkboxes are plain inputs styled with
Tailwind + Dracula tokens.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

messages/de.json

@@ -883,7 +883,8 @@
         "last30days": "letzte 30 Tage",
         "last90days": "letzte 90 Tage",
         "allTime": "gesamter Zeitraum"
-      }
+      },
+      "windowLabel": "Zeitraum"
     },
     "viewAll": "Alle ansehen",
     "previewEmpty": "Noch keine Empfehlungen.",

messages/en.json

@@ -883,7 +883,8 @@
         "last30days": "last 30 days",
         "last90days": "last 90 days",
         "allTime": "all time"
-      }
+      },
+      "windowLabel": "Window"
     },
     "viewAll": "View all",
     "previewEmpty": "No recommendations yet.",

src/components/insights/coach-panel/__tests__/sources-rail.test.tsx

@@ -50,4 +50,26 @@ describe("<SourcesRail>", () => {
       "The Coach reads only the data you&#x27;ve connected.",
     );
   });
+
+  it("renders a checkbox per row + a window selector trigger", () => {
+    const html = render(<SourcesRail />);
+    const checkboxes = (
+      html.match(/data-slot="coach-sources-checkbox"/g) ?? []
+    ).length;
+    expect(checkboxes).toBe(5);
+    expect(html).toContain('data-slot="coach-sources-window-trigger"');
+  });
+
+  it("paints checkboxes as checked when scope.sources includes the row", () => {
+    const html = render(
+      <SourcesRail
+        scope={{ sources: ["bp", "weight"], window: "last7days" }}
+        onScopeChange={() => undefined}
+      />,
+    );
+    // The bp + weight rows should be marked active; others inactive.
+    expect(html).toMatch(/data-source="bp"[^>]*data-active="true"/);
+    expect(html).toMatch(/data-source="weight"[^>]*data-active="true"/);
+    expect(html).toMatch(/data-source="pulse"[^>]*data-active="false"/);
+  });
 });

src/components/insights/coach-panel/coach-drawer.tsx

@@ -24,8 +24,13 @@ import { CoachDrawerBody } from "./coach-drawer-body";
 import { CoachInput } from "./coach-input";
 import { HistoryRail } from "./history-rail";
 import { MessageThread } from "./message-thread";
-import { SourcesRail } from "./sources-rail";
+import { DEFAULT_COACH_SCOPE, SourcesRail } from "./sources-rail";
 import { useCoachConversation, useSendCoachMessage } from "./use-coach";
+import type {
+  CoachScope,
+  CoachScopeSource,
+  CoachScopeWindow,
+} from "@/lib/ai/coach/types";
 
 /**
  * v1.4.20 phase B2b — AI Coach drawer (right-side `<Sheet>` overlay).
@@ -89,6 +94,17 @@ export function CoachDrawer({
   // open/prefill transition. That sidesteps `setState`-in-`useEffect`
   // entirely (banned by `react-hooks/set-state-in-effect`).
   const [inputValue, setInputValue] = useState<string>(() => prefill ?? "");
+  // v1.4.20.1 — scope picker state (per-source checkboxes + window
+  // selector). Resets to the all-source last30days default each time
+  // the drawer mounts; no conversation-level persistence in this
+  // hotfix per the v1.4.20.1 plan.
+  const [scope, setScope] = useState<{
+    sources: CoachScopeSource[];
+    window: CoachScopeWindow;
+  }>(() => ({
+    sources: [...DEFAULT_COACH_SCOPE.sources],
+    window: DEFAULT_COACH_SCOPE.window,
+  }));
 
   const handleOpenChange = useCallback(
     (next: boolean) => {
@@ -115,9 +131,23 @@ export function CoachDrawer({
     const trimmed = value.trim();
     if (!trimmed || send.isStreaming) return;
     setInputValue("");
+    // Pass the scope only when the user has narrowed it from the
+    // defaults — keeps the wire payload minimal and lets the route
+    // tell "no opinion" apart from "intentionally narrow".
+    const isDefault =
+      scope.window === DEFAULT_COACH_SCOPE.window &&
+      scope.sources.length === DEFAULT_COACH_SCOPE.sources.length &&
+      DEFAULT_COACH_SCOPE.sources.every((s) => scope.sources.includes(s));
+    const scopePayload: CoachScope | undefined = isDefault
+      ? undefined
+      : {
+          sources: scope.sources,
+          window: scope.window,
+        };
     await send.send({
       conversationId: currentConversationId ?? undefined,
       message: trimmed,
+      scope: scopePayload,
     });
   }
 
@@ -226,7 +256,14 @@ export function CoachDrawer({
               />
             )
           }
-          sourcesRail={sourcesRail ?? <SourcesRail />}
+          sourcesRail={
+            sourcesRail ?? (
+              <SourcesRail
+                scope={scope}
+                onScopeChange={setScope}
+              />
+            )
+          }
           thread={
             <MessageThread
               conversation={conversation ?? null}
@@ -291,7 +328,9 @@ export function CoachDrawer({
               </SheetTitle>
             </SheetHeader>
             <div className="h-full min-h-0 overflow-y-auto">
-              {sourcesRail ?? <SourcesRail />}
+              {sourcesRail ?? (
+                <SourcesRail scope={scope} onScopeChange={setScope} />
+              )}
             </div>
           </SheetContent>
         </Sheet>

src/components/insights/coach-panel/sources-rail.tsx

@@ -10,30 +10,83 @@ import {
   Smile,
 } from "lucide-react";
 
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
 import { cn } from "@/lib/utils";
 import { useTranslations } from "@/lib/i18n/context";
+import type {
+  CoachScope,
+  CoachScopeSource,
+  CoachScopeWindow,
+} from "@/lib/ai/coach/types";
 
 /**
  * v1.4.20 phase B2b — "What I can see" rail.
  *
  * Right-column companion in the Coach drawer. Lists the data sources
  * the assistant draws on so the user can build trust in the
- * provenance. v1.4.20 ships with a hard-coded list keyed off the
- * five contracts the snapshot helper currently surfaces (BP, weight,
- * pulse, mood, medication compliance). v1.4.21 will plug in fresh /
- * stale dot indicators by reusing `<IntegrationStatusPill>`.
+ * provenance.
  *
- * Hardcoding the list here is deliberate: every line is i18n-driven
- * so locale switching works out of the box, and the underlying user
- * data is already gated behind the page-level `requireAuth()` so a
- * user without a connected source still sees the legend.
+ * v1.4.20.1 — controls promoted from a static legend to a real scope
+ * picker:
+ *   - per-source checkboxes (BP / Weight / Pulse / Mood / Compliance)
+ *     so the user can include/exclude a source from the next Coach
+ *     turn
+ *   - a window selector (last 7 / 30 / 90 days, all time) feeding
+ *     `buildCoachSnapshot`'s timeline window
+ * Scope state lives in the parent drawer so `useSendCoachMessage`
+ * can pass it through to the route on each send. The rail itself
+ * stays presentational — it reads the current scope and emits an
+ * `onScopeChange` whenever the user toggles a control. No
+ * conversation-level persistence in v1.4.20.1; the rail resets to
+ * "all sources, last 30 days" each time the drawer mounts fresh.
  */
+
+const ALL_SOURCES: ReadonlyArray<CoachScopeSource> = [
+  "bp",
+  "weight",
+  "pulse",
+  "mood",
+  "compliance",
+];
+
+const DEFAULT_WINDOW: CoachScopeWindow = "last30days";
+
+/**
+ * Default scope used by the drawer's initial mount. Exported so the
+ * parent can seed its own state without re-deriving the same values.
+ */
+export const DEFAULT_COACH_SCOPE: Required<
+  Pick<CoachScope, "sources" | "window">
+> = {
+  sources: [...ALL_SOURCES],
+  window: DEFAULT_WINDOW,
+};
+
 export interface SourcesRailProps {
   className?: string;
+  /**
+   * Current scope. When omitted the rail paints with the all-source
+   * last-30-days defaults — useful in storyboards / unit tests that
+   * just want to see the legend.
+   */
+  scope?: CoachScope;
+  /**
+   * Fired when the user toggles a checkbox or changes the window.
+   * The parent merges the change into its scope state. When omitted
+   * the controls still render but stay read-only — keeps the legend
+   * surface stable for callers that don't yet wire scope through.
+   */
+  onScopeChange?: (next: { sources: CoachScopeSource[]; window: CoachScopeWindow }) => void;
 }
 
 interface SourceRow {
-  key: string;
+  key: CoachScopeSource;
   metricKey: string;
   Icon: React.ComponentType<{ className?: string }>;
   accentClass: string;
@@ -72,8 +125,44 @@ const ROWS: SourceRow[] = [
   },
 ];
 
-export function SourcesRail({ className }: SourcesRailProps) {
+const WINDOW_OPTIONS: ReadonlyArray<CoachScopeWindow> = [
+  "last7days",
+  "last30days",
+  "last90days",
+  "allTime",
+];
+
+export function SourcesRail({
+  className,
+  scope,
+  onScopeChange,
+}: SourcesRailProps) {
   const { t } = useTranslations();
+
+  const activeSources = new Set<CoachScopeSource>(
+    scope?.sources && scope.sources.length > 0
+      ? scope.sources
+      : DEFAULT_COACH_SCOPE.sources,
+  );
+  const activeWindow: CoachScopeWindow = scope?.window ?? DEFAULT_WINDOW;
+  const interactive = !!onScopeChange;
+
+  function toggleSource(key: CoachScopeSource) {
+    if (!onScopeChange) return;
+    const next = new Set(activeSources);
+    if (next.has(key)) next.delete(key);
+    else next.add(key);
+    onScopeChange({ sources: Array.from(next), window: activeWindow });
+  }
+
+  function setWindow(next: CoachScopeWindow) {
+    if (!onScopeChange) return;
+    onScopeChange({
+      sources: Array.from(activeSources),
+      window: next,
+    });
+  }
+
   return (
     <div
       data-slot="coach-sources-rail"
@@ -85,38 +174,103 @@ export function SourcesRail({ className }: SourcesRailProps) {
           {t("insights.coach.sourcesTitle")}
         </span>
       </div>
+
+      {/* Window selector — every row below is filtered to the picked
+          window when the next Coach message goes out. 36px touch
+          target on the trigger so the rail stays mobile-friendly when
+          it surfaces inside the side-tray on `<xl`. */}
+      <div data-slot="coach-sources-window" className="flex flex-col gap-1">
+        <label
+          htmlFor="coach-sources-window-select"
+          className="text-muted-foreground px-1 text-[10px] font-medium tracking-wide uppercase"
+        >
+          {t("insights.coach.windowLabel")}
+        </label>
+        <Select
+          value={activeWindow}
+          onValueChange={(v) => setWindow(v as CoachScopeWindow)}
+          disabled={!interactive}
+        >
+          <SelectTrigger
+            id="coach-sources-window-select"
+            data-slot="coach-sources-window-trigger"
+            size="default"
+            className="h-9 text-xs"
+          >
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            {WINDOW_OPTIONS.map((w) => (
+              <SelectItem key={w} value={w} className="text-xs">
+                {t(`insights.coach.window.${w}`)}
+              </SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+      </div>
+
       <ul
         data-slot="coach-sources-list"
         className="flex flex-1 flex-col gap-1.5"
       >
-        {ROWS.map((row) => (
-          <li
-            key={row.key}
-            data-slot="coach-sources-row"
-            data-source={row.key}
-            className={cn(
-              "border-border/60 bg-muted/30 flex items-center gap-2",
-              "rounded-md border px-2.5 py-2",
-            )}
-          >
-            <row.Icon
-              className={cn("size-3.5", row.accentClass)}
-              aria-hidden="true"
-            />
-            <span className="text-foreground flex-1 text-xs font-medium">
-              {t(row.metricKey)}
-            </span>
-            {/* Fresh / stale indicator — v1.4.20 is a static dot
-                with no real freshness state behind it (v1.4.21 plugs
-                in <IntegrationStatusPill>). aria-hidden so SR users
-                don't hear "Fresh" five times in a row for what is
-                actually a placeholder. */}
-            <span
-              aria-hidden="true"
-              className="bg-dracula-green size-1.5 rounded-full"
-            />
-          </li>
-        ))}
+        {ROWS.map((row) => {
+          const checked = activeSources.has(row.key);
+          const checkboxId = `coach-sources-toggle-${row.key}`;
+          return (
+            <li
+              key={row.key}
+              data-slot="coach-sources-row"
+              data-source={row.key}
+              data-active={checked ? "true" : "false"}
+              className={cn(
+                "border-border/60 bg-muted/30 flex items-center gap-2",
+                "rounded-md border px-2.5",
+                // 36px target so a finger tap reliably lands on the
+                // checkbox on mobile (the side-tray surface).
+                "min-h-9 py-1.5",
+                !checked && "opacity-60",
+              )}
+            >
+              <input
+                id={checkboxId}
+                type="checkbox"
+                checked={checked}
+                disabled={!interactive}
+                onChange={() => toggleSource(row.key)}
+                data-slot="coach-sources-checkbox"
+                aria-label={t(row.metricKey)}
+                className={cn(
+                  "border-border/70 text-dracula-purple",
+                  "size-4 shrink-0 cursor-pointer rounded",
+                  "focus-visible:ring-ring/50 focus-visible:ring-2",
+                  "disabled:cursor-not-allowed disabled:opacity-50",
+                )}
+              />
+              <row.Icon
+                className={cn("size-3.5", row.accentClass)}
+                aria-hidden="true"
+              />
+              <label
+                htmlFor={checkboxId}
+                className={cn(
+                  "text-foreground flex-1 cursor-pointer text-xs font-medium",
+                  !interactive && "cursor-default",
+                )}
+              >
+                {t(row.metricKey)}
+              </label>
+              {/* Fresh / stale indicator — v1.4.20 was a static dot
+                  with no real freshness state behind it (v1.4.21 plugs
+                  in <IntegrationStatusPill>). aria-hidden so SR users
+                  don't hear "Fresh" five times in a row for what is
+                  actually a placeholder. */}
+              <span
+                aria-hidden="true"
+                className="bg-dracula-green size-1.5 rounded-full"
+              />
+            </li>
+          );
+        })}
       </ul>
       <div className="border-border/50 mt-auto flex items-start gap-2 border-t pt-3">
         <Activity

src/components/insights/coach-panel/use-coach.ts

@@ -8,6 +8,7 @@ import type {
   CoachConversationDTO,
   CoachConversationsPage,
   CoachProvenance,
+  CoachScope,
   CoachStreamEvent,
 } from "@/lib/ai/coach/types";
 
@@ -214,6 +215,12 @@ export interface SendCoachMessageParams {
   message: string;
   prefill?: string;
   locale?: "en" | "de";
+  /**
+   * v1.4.20.1 — optional snapshot scope (per-source toggles + window)
+   * driven by the sources-rail picker. When omitted the server falls
+   * back to all-source last30days, matching the legacy behaviour.
+   */
+  scope?: CoachScope;
 }
 
 export interface UseSendCoachMessageOptions {
@@ -283,6 +290,7 @@ export function useSendCoachMessage(opts: UseSendCoachMessageOptions = {}) {
             message: params.message,
             prefill: params.prefill,
             locale: params.locale,
+            scope: params.scope,
           }),
           signal: controller.signal,
         });

src/lib/ai/coach/__tests__/snapshot.test.ts

@@ -135,4 +135,24 @@ describe("buildCoachSnapshot", () => {
     ]);
     expect(parsed.scope.window).toBe("last30days");
   });
+
+  it("scope-only-mood pulls just mood data, no measurements query", async () => {
+    featuresMock.mockResolvedValue({
+      mood: { avg30: 4.2, coverage: { count: 12 } },
+    });
+    prismaMock.moodEntry.findMany.mockResolvedValue([
+      {
+        moodLoggedAt: new Date(Date.now() - 2 * 24 * 60 * 60 * 1000),
+        score: 4,
+      },
+    ]);
+
+    const out = await buildCoachSnapshot("user-1", {
+      sources: ["mood"],
+    });
+    expect(prismaMock.measurement.findMany).not.toHaveBeenCalled();
+    expect(out.provenance.metrics).toContain("mood");
+    const parsed = JSON.parse(out.snapshotJson);
+    expect(parsed.mood.timeline.recent.length).toBe(1);
+  });
 });